OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application+ Q! o% L! A/ ~# ?0 |
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* edma_test.c4 G5 A3 e- E4 D
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* brief EDMA3 Test Application9 k( \4 ]( C% ]5 g" z
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT7 A$ G9 I8 \& ?+ s y
* TO CHANGE.6 ^/ M+ N2 g* P4 b! z( Z/ B
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as) a4 ]: F5 _# |5 S- a
* published by the Free Software Foundation version 2.6 M q0 Q" R% g3 R9 I
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 U0 L/ v1 f- d5 g1 T' `" L
* kind, whether express or implied; without even the implied warranty: ` p/ J+ v% Z
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>) s8 d+ F5 Q7 D2 |( O2 ~. B
#include <linux/errno.h>; e- I0 ]2 ]) F# f H
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>% I8 c, {" I* \6 b3 I4 m3 }
#include <linux/moduleparam.h>( |! Q. P- G9 O, N# A8 P9 Q' Z
#include <linux/sysctl.h>/ I) Y3 s `# j/ ?% i
#include <linux/mm.h>) v, j8 _7 [: b. P, e- l! W
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>2 r% Y7 N6 p5 }, K1 j
#include <mach/irqs.h>3 X' v9 ]9 d7 I3 S8 G
#include <asm/hardware/edma.h>7 G. q' C: E, T6 J* D
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/. R Y6 \* x) Q& O6 ]- N9 z
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)9 G" q- E6 H3 @7 H$ ~
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)8 D" V& Z2 Q2 {. J) N! w
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)1 Y) T6 m! R: ^6 B' X: ~
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 i+ |4 m. K6 g N- ]! M2 J
#define DMA_FN_OUT+ F# B5 M1 W1 A+ H$ Y! R
#endif9 q1 c% @: q# O( `
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( I+ z! `0 o& C, z; b: N
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 204 O f! x) K0 h% p( T5 w5 v' w$ v; A
#define ITCINTEN_SHIFT 215 _0 U7 ? ?& I: u. K
#define TCCHEN_SHIFT 224 L. p: W- ^& W/ a
#define ITCCHEN_SHIFT 23) s K4 e; P" z% e' U! Q! @
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static volatile int irqraised1 = 0;( V" M% _/ D3 ?7 z) E
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 C% Z5 s- k7 i, a* O" }+ F
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ v4 S/ w- ^+ ~9 f2 ?
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ J# g% h, N* r" i/ P. ~
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;! b/ F$ `" M! W8 y2 P F
dma_addr_t dmaphysdest1 = 0;. z* C1 U i1 R& E' X' s! x+ U
dma_addr_t dmaphysdest2 = 0;' K( ?) L9 u6 F" u
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;, d# ^8 `! A/ t$ K. ]- [ T
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;8 H3 X; r0 k% D+ A1 T, j
static int bcnt = 8;) f) c: o) h4 F3 d2 x3 J, k
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动